Erosion resistance of HVOF/AC-HVAF sprayed WC-10Co- 4Cr coatings

被引：0
|
作者：
Lian Y. [1 ]
Li Y. [1 ]
Wang J. [1 ]
Wu H. [1 ]
机构：
[1] College of Mechanical and Equipment Engineering, Hebei University of Engineering, Handan
来源：
Hanjie Xuebao/Transactions of the China Welding Institution | 2019年 / 40卷 / 04期
关键词：
Erosion mechanism; Erosion resistance; HVOF/AC-HVAF; WC-10Co-4Cr coatings;
D O I：
10.12073/j.hjxb.2019400107
中图分类号：
学科分类号：
摘要：
Three WC-10Co-4Cr coatings with different microstructure were prepared on 0Cr13Ni5Mo stainless steel by high velocity oxy-fuel/air-fuel (HVOF/AC-HVAF) thermal spray systems. The erosion behavior and mechanisms of three WC-10Co-4Cr coatings and 0Cr13Ni5Mo were investigated using slurry pot erosion equipment, and the relation between microstructure and erosion resistance of coatings was analyzed. The results indicated that the erosion resistance of three coatings was better than that of 0Cr13Ni5Mo. The erosion mass loss of three coatings was 6% ~ 35% of the 0Cr13Ni5Mo. The coatings with more homogeneous microstructure behaved better erosion resistance. For coatings, the dominant erosion mechanism was removal of binder and WC cuboids pull out at shallow impingement angle while coatings spallation mechanism dominated at high impingement angle. In contrast, micro-cutting mechanism dominated at shallow impingement angle while its dominant erosion mechanism was repeated deformation which resulted in the removal of materials at high impingement angle for 0Cr13Ni5Mo stainless steel. The erosion behavior and mechanisms of coatings at different test condition were dependent on their microstructure. © 2019, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
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页码：95 / 100
页数：5
相关论文
共 14 条
  • [1] Liu J., Su X., Preparing technology and application of cupreous coatings in equipment repairing, Surface Technology, 45, 9, pp. 134-139, (2016)
  • [2] Yang X., Li G., Wang H., Et al., Microstructure and erosion wear of supersonic plasma sprayed NiCr-Cr<sub>3</sub>C<sub>2</sub> coatings, Surface Technology, 45, 9, pp. 32-37, (2016)
  • [3] Vashishtha N., Khatirkar R.K., Sapate S.G., Tribological behaviour of HVOF sprayed WC-12Co, WC-10Co-4Cr and Cr<sub>3</sub>C<sub>2</sub> -25NiCr coatings, Tribology International, 105, pp. 55-68, (2017)
  • [4] Zafar S., Sharma A.K., Abrasive and erosive wear behaviour of nanometric WC-12Co microwave clads, Wear, 346-347, pp. 29-45, (2016)
  • [5] Lamana M.S., Pukasiewicz A.G.M., Sampath S., Influence of cobalt content and HVOF deposition process on the cavitation erosion resistance of WC-Co coatings, Wear, 398-399, pp. 209-219, (2018)
  • [6] Song Z., Du X., Li L., Et al., Influence of powderfeeding mode on microstructure of WC reinforced composite coating, Transactions of the China Welding Institution, 33, 4, pp. 13-16, (2012)
  • [7] Zhao H., Ding Z., Research on slurry erosion resistance of nano-structured WC-12Co coatings deposited by HVOF, Hot Working Technology, 38, 10, pp. 84-88, (2009)
  • [8] Chen X., Zhou X., Wu Y., Et al., Properties of micro and nano structured WC-10Co<sub>4</sub>Cr coatings by HVOF spray, Heat Treatment of Metals, 41, 5, pp. 52-56, (2016)
  • [9] Gong T.M., Yao P.P., Zuo X.T., Et al., Influence of WC carbide particle size on the microstructure and abrasive wear behavior of WC-10Co-4Cr coatings for aircraft landing gear, Wear, 362-363, pp. 135-145, (2016)
  • [10] Ding K.Y., Wang L.J., Effect of particle density on depositing properties of WC-17Co by HVOF process, China Welding, 23, 4, pp. 44-50, (2014)
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